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GCC also has dynamic gotos as a C extension, called „computed gotos”. See: https://eli.thegreenplace.net/2012/07/12/computed-goto-for-efficient-dispatch-tables

GCC also has dynamic gotos as a C extension, called „computed gotos”. See: https://eli.thegreenplace.net/2012/07/12/computed-goto-for-efficient-dispatch-tables https://eli.thegreenplace.net/2012/07/12/computed-goto-for-e... https://gcc.gnu.org/onlinedocs/gcc/Labels-as-Values.html https://gcc.gnu.org/onlinedocs/gcc/Labels-as-Values.html

fiddlerwoaroof 5y ago
First class functions are also very similar to dynamic gotos: https://dspace.mit.edu/handle/1721.1/5753 https://dspace.mit.edu/handle/1721.1/5753
throwaway81523 5y ago
That is not much used directly by human C programmers. It's more for using C as a target language for another compiler, or in some cases as a fast dispatch in an interpreter. GNU Forth (gforth) uses it to dispatch between Forth words, for example.
josephcsible 5y ago
It's kind of unfair to compare this to ALTER. Most of the time you're not using `goto *something;`, and when you're not, you know exactly where it's going to go. With COBOL's ALTER, it's as if every single goto were a computed goto, with the value of all of them being stored in global variables.